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(No Model.) V

H. N. POMEROY.

DUST COLLECTOR.

No 381,639. Patented Apr. 24, 1888.

lNVENTOR,

Hnrg JV: .Polne'iog WITNESSES.

UNITED STATES PATENT FFIQEO HENRY N. POMEROY, OF SPARTA, WISCONSIN,ASSIGNOR 'IO J. A, WARNER, OF SAME PLACE.

DUST-COLLECTOR.

SPECIFICATION forming part of Letters Patent No. 381,639, dated April24, 1888.

Application filed September 8, 1887. Serial No. 249,128. (No model.) 7

To aZZ whom it may concern.-

Be it known that I, HENRY N. POMEROY, of Sparta, in the county of Monroeand State of \Visconsin, have invented certain new and usefulImprovements in Dust-Collectors, of which the following is aspecification, reference being bad to the accompanying drawings.

The object of my invention is to provide a device for collecting thedust from middlingspurifiers in flooring-mills; and my inventionconsists in the improved apparatus hereinafter described and claimed.

In the accompanying drawings, Figure 1 is an end view partly in section,and Fig. 2 is a side elevation partly in section.

A indicates a frame or housing in which is secured a conical tube, B,provided with a spout, G. \Vilhin this tube is a regular hollowcylinder, D, and between the conical tube and the cylinder D is a spiralpartition, E. The conical tube is provided on its lower side with slotsF, and below thisis a dust-receptacle, G, in the bottom of which is ascrew, H, to be rotated by any ordinary application of power for forcingout the collected dust. Leading from the dust-receptacle below to the int-erior of the cylinder D is a pipe, I. There is an opening at Lconnecting the space between the hollow cylinder and the conical tubewith the interior of the hollow cylinder.

The operation of this apparatus is as follows: The dust-laden blast ofair coming from a middlingspurifier enters the spout O and is blownagainst the inner surface of the conical tube, the spiral partitionscontinuing the course of the air against the inner surface ofthe tubealong its entire length. This causes the dust to be forced out of theconical slots in the bottom of the tube into the dust-receptacle below.The dust is there deposited and the air, being relieved of it, is forcedout of the pipe I into the hollow cylinder D and passes out of theend ofthe cylinder at K. Part of the air will escape directly into theinterior of the hollow cylinder through the opening L without passingdown into the dust-receptacle below; but such air as does pass downthere will ascend through the pipe I and into the hollow cylinder andescape, as above described.

Having thus described my invention, What I claim is- The combination ofthe spent 0, the slotted conical tube B, the hollow cylinder D, thespiral partition E between the cylinder and tube, the dustreceptacle Gbeneath, and the airpipe I, all arranged and operating substantially asset forth.

In testimony whereof I have hereunto subscribed my name.

HENRY N. POMERQY.

Witnesses: I

G. M. Mnsrnns, I. H. ADY.

